<template>
  <div class="app">
    <h3>我是App组件</h3>
    <Child></Child>
  </div>
</template>

<script>
import Child from './components/Child.vue'
export default {
  name: "App",
  components: {
    Child
  }
};
</script>
 <style>
 .app{
   background-color: gray;
   padding: 10px;
 }
 </style>


